{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{6}{c}}
\toprule
\midrule
Pcru            &    0.563***&    0.522***&    0.552***&    1.575***&    1.547***&            \\
                & (0.0817)   & (0.0853)   & (0.0841)   &  (0.215)   &  (0.217)   &            \\
\addlinespace
\_Rival\_Pcru     &  -0.0251   &    0.191** &   -0.344***&   -1.786***&   -1.664***&            \\
                &  (0.400)   & (0.0859)   &  (0.107)   &  (0.587)   &  (0.246)   &            \\
\addlinespace
\_X\_CDD          & 0.000303** & 0.000256** & 0.000243** & 0.000314** & 0.000256** &            \\
                &(0.000130)   &(0.000109)   &(0.000109)   &(0.000129)   &(0.000110)   &            \\
\addlinespace
\_X\_HDD          & 0.000156***& 0.000213***& 0.000205***& 0.000171***& 0.000217***&            \\
                &(0.0000588)   &(0.0000460)   &(0.0000459)   &(0.0000589)   &(0.0000459)   &            \\
\addlinespace
\_X\_income\_pc    &   -13.83   &   -12.76   &   -14.70   &   -13.52   &   -12.80   &            \\
                &  (11.11)   &  (11.39)   &  (11.36)   &  (10.71)   &  (10.93)   &            \\
\addlinespace
\_X\_log\_pop      &    2.048** &    2.144** &    2.047** &    1.809** &    1.877** &            \\
                &  (0.893)   &  (0.886)   &  (0.879)   &  (0.870)   &  (0.856)   &            \\
\addlinespace
frac\_resale     &   -0.276** &   -0.278** &   -0.274** &   -0.263** &   -0.268** &            \\
                &  (0.109)   &  (0.111)   &  (0.109)   &  (0.109)   &  (0.112)   &            \\
\addlinespace
(mean) nrefs    &   0.0181   &   0.0208   &   0.0260   &   0.0183   &   0.0256   &            \\
                & (0.0731)   & (0.0733)   & (0.0737)   & (0.0689)   & (0.0690)   &            \\
\addlinespace
API Gravity     &-0.000129   &0.0000250   & 0.000622   & -0.00775   & -0.00773   & -0.00695** \\
                &(0.00503)   &(0.00505)   &(0.00499)   &(0.00526)   &(0.00521)   &(0.00327)   \\
\addlinespace
Downstream Capacity&   -0.427** &   -0.434** &   -0.440** &   -0.233   &   -0.241   &  -0.0710   \\
                &  (0.179)   &  (0.179)   &  (0.179)   &  (0.188)   &  (0.188)   & (0.0535)   \\
\addlinespace
shipcost        &  -0.0890   &   -0.109   &   -0.137   &   -0.208   &   -0.241   &            \\
                &  (0.188)   &  (0.184)   &  (0.184)   &  (0.179)   &  (0.176)   &            \\
\addlinespace
frac\_light      &    0.539***&    0.534***&    0.539***&    0.568***&    0.568***&            \\
                &  (0.115)   &  (0.117)   &  (0.117)   &  (0.111)   &  (0.113)   &            \\
\addlinespace
brent\_cru       &            &            &    0.486***&            &    0.775***&            \\
                &            &            & (0.0807)   &            & (0.0872)   &            \\
\addlinespace
(P2) Midwest    &            &            &            &            &            &   -0.111*  \\
                &            &            &            &            &            & (0.0583)   \\
\addlinespace
(P3) Gulf       &            &            &            &            &            &   0.0703   \\
                &            &            &            &            &            & (0.0558)   \\
\addlinespace
(P4) Plains     &            &            &            &            &            &   -0.176***\\
                &            &            &            &            &            & (0.0584)   \\
\addlinespace
(P5) West Coast &            &            &            &            &            &    0.115   \\
                &            &            &            &            &            & (0.0716)   \\
\addlinespace
\% Domestic Crude&            &            &            &            &            &   -0.112*  \\
                &            &            &            &            &            & (0.0592)   \\
\addlinespace
Log(Capacity)   &            &            &            &            &            &  0.00849   \\
                &            &            &            &            &            & (0.0163)   \\
\midrule
mean(Y)         &            &            &            &            &            &     -.12   \\
N               &    24943   &    24943   &    24943   &    24943   &    24943   &       51   \\
r2              &    0.762   &    0.752   &    0.754   &    0.746   &    0.738   &    0.719   \\
\bottomrule
\end{tabular}
}
